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:JA M E s o. 'W/A LTE n, o r N uw .Y on 1",N.V Y."

Leners Parent No.' 65,780, dans Jaw 11, 1st?.

mrnovsn APPARATUS ron HAeDsNINe AND'TEMPBRING wma @In slgnnlrc return it in ligne ntes martin mating .um uf ligt sume 'E0-ALL WHOM IT MAY CONCERN: p

Beit known that I, JAMES O. WALTER, of 'the city, county, and Stateof New York, have invented Acertain new and useful improvements in Apparatus for Hardening and Tempering Wire and other articles; and4 I do hereby declare that the following is a vfull,.clen.r, and-exact description of the same, reference boing had to the accompanyugdrawings, making a portion-of this specification, lin which Figure 1 is a plan view of an apparatus constructed according to my invention.

Figure 2 is a central vertical longitudinal section of the same.

Similar letters of reference indicate corresponding parts in both iigures, Y llhis inventionds designed for holding umbrella andparasol stretchers, or saws, er other like articles, in a straight positiou,..while they are being hardened .and tempered, thereby eiectua'lly preventing thesame from warpingl during such hardening and temperingoperations. i The invention consists in astraining-fram`e so constructed that the.. stretchers or other articlesl may beclamped therein and subjected to a longitudinal strainin such manner that the` object mentioned is efl'ectually' accomplished, at'the same time that the aforesaid articles may be very convenientlyhandledor n xanipu'lated,y as required -in the operations specified, The invention also consists in certain novel arrangement of parts whereby 4the articles are readily secured and retained in the straining-frame, and wherebythe -tension exerted -upon the articles heldin the said frame is rendered continuous, and whereby, furthermore,such tension maybe ladjusted at pleasure. To enable others tonnderstandthenntunehndaennstructienm my invention, I will proceed to describe it 'with reference to the'drawingv's; Y i '1 l 'v represents a rectangular metallic frame-,furnished at' one end with 'a shank or extension, VA `which is made-.tubular for the greater portion of its length, as shown at a. "The two sidesofA thefraime A are formed vrwith guides @which receive the ends of a sliding-head, B, arranged transversely inthe saidframe.` This `head- I l constructed with a vlongitudinal groove at c, -in which is placed any number of suitable square blocks, 02,

between'which the inner epds .of the-articles to be hardened or tempered are clamped, as hereinafter fully set v forth. Thesaid blocks are ,retained in the-groove mentioned v'by a top plate,- e, secured lupon the upper side of the head in the position shown more clearly in iig. A2, and are compressed and forced toward each other, whenrequire-d, hy means of two screws, f, passing through the ends of. -the head, as represented in iig. l. Working throughthe outer end of the tubular portion aof the shank Ait', i's ascreu',` C, to the inner end of which is attached a strong spiral'spring, D, the lo pposite end of which is connected by al'lnk or `h oolgy, with the slidingheadB. v' f f.

In using the apparatus in hardening and tempering 'parasol stretchers, indicated at a* in the drawings, which are provided with transverse holes at on e end only, the perforatedl ends thereof are passed through suitahle slots in the outer end of the frame A, and a transverse rod, h, ispassed through the aforesaid holes inthe ends of the frame, as shown in fig. Land the opposite or inner ends of the stretchers are placed between the blocks d, which are eompressedto tightly clamp the said 'ends by meansoi' the screws f. Thestrtcliers -being thus secured in the'apparatus, the screw C is turned' to draw upon'V the spring D, and conse'tfu'ently upon the head A, thus exerting a strain or tension longitudinally upon thestretchers, the degree of such tension being adjusted by the aforesaid screw, C, while the spring D causes the same to be continuons. The frame A, withV vthe stretchers al, thus secured therein, is placedin s. suitable furnace, and the stretcher-sare heated to the vdegree required in hardening or tempering the same, as the case may he, and' being kept constantly strained during such heating operation, are eectunlly prevented from warping while'undergoing the same. Furthermore, inasmuchfas the extension serves almndle, the apparatus may he very conveniently manipulated when in use. In removing the Aartic-les from the apparatus, the hook g is detached from the spring D, thus releasingl the strain upon thesaid articles, which are then released from the clamping-blocks nl by turning outward the screwsf. I A v if Inoperating upon umbrella'slretchers, which are perforated athoth ends, the sliding-head B may be fui nished with a rod corresponding to the rod le, to hold the inner ends of' the strot-chers in place thereon; and when the apparatus is employed in operating upon saw-blades oi other like articles, the 'outer end of the frame l A I "I A. .l l A should be furnished withicljompmg devices equivalent to those upon the hcadB, 1n order to properly hold m place the outer ends of suchirvticles. K

W'hat I claim as my invent-ion, qnd desire to soeur@ byA Letters Paten, is-

l. The conibination of the screw C with the sliding-houd B, nml frame A, substantially ns herein scf forth for thc )fmrpo'se specified.`

2. lhe' combinziion of the tds-spring, the sliding-head, und the frame A, substantially.r as heroin seb forth for the purpose specified.

3. The sliding-hood constructcd with clmupingblocks (l and tightening screws f, slxbstantally as herein set forth fox` the purpose specified r A4. The arrangement of the screw C, tensiorvspring D, sliding-head B, and fraune A, substantially as` herein sel: forth for the purpose specified. JAMES' C. WALTER.

Witnesses:

G. W.. REED,

J. W. Coombs. 

